[clang] [Clang][Sema] Improve support for explicit specializations of constrained member functions & member function templates (PR #88963)

[Erich Keane via cfe-commits]

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@@ -0,0 +1,58 @@
+// RUN: %clang_cc1 -std=c++20 -verify %s
+
+template<int I>
+concept C = I >= 4;
+
+template<int I>
+concept D = I < 8;
+
+template<int I>
+struct A {
+  constexpr static int f() { return 0; }
+  constexpr static int f() requires C<I> && D<I> { return 1; }
+  constexpr static int f() requires C<I> { return 2; }
+
+  constexpr static int g() requires C<I> { return 0; } // expected-note {{member function specialization matches 'g'}}
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erichkeane wrote:

Ah, please use the bookmark tags for these notes, I already got confused here: ) 

https://github.com/llvm/llvm-project/pull/88963